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-   -   Shunt or serie volume control (http://www.diyaudio.com/forums/solid-state/128331-shunt-serie-volume-control.html)

maxpou 19th August 2008 01:48 AM

Shunt or serie volume control
 
Hi Guys,
I would like to know if i change my volume control ( Black beauty ) by stepped attenuator Elma, will I improve a lot my sound quality? And if yes what's the best shunt or serie. it's my preamp at this link post 32:
http://www.diyaudio.com/forums/showt...69#post1541169

Thank you in advance! Maxpou

Zen Mod 19th August 2008 02:02 AM

Re: Shunt or serie volume control
 
stepped is always better than plain pot

you'll hear difference as much your next stage is good ;

real shunt is always better than plain series

tritosine 19th August 2008 02:44 AM

alps black beauty is a stereo rotary switch with laser trimmed resistors, unless its a fake (there are plenty counterfeits) .

maxpou 31st August 2008 07:05 PM

Thank you guys for reply,
but the shunt stepped attenuator change my input impedance and change the sound too depending Charles Hansen, but if i read the borbely document he said there was no difference. Somebody can tell me who said true? Thank you! Maxpou

maxpou 20th September 2008 09:00 PM

Nobody can help me?:xeye:

Lumba Ogir 21st September 2008 11:09 AM

maxpou,
is this your best shot for a good sounding circuit? I would in the first place make topological changes to get significant improvement.

maxpou 21st September 2008 01:07 PM

Quote:

Originally posted by Lumba Ogir
maxpou,
is this your best shot for a good sounding circuit? I would in the first place make topological changes to get significant improvement.

Hi,
thank you for reply Lumba Ogir, what do you want to change for improvement? thank you Maxpou

AndrewT 21st September 2008 01:22 PM

investigate the much simpler Pedja or Pass B1 buffers.

lineup 21st September 2008 01:39 PM

maxpou, this is my guess:

> You should change it, so it will be like one of Lumba Ogir JFET amplifiers
... the only drawback, is that it will no longer be your design
Lumba Ogir JFET amp circuits & projects topics,
which we have seen plenty many of (do I need to provide links?)
are those that can work very well and so not get critical comment from Lumba.
In fact, they are above John Curl class, if I have understood Lumba's posts correctly.


Personally, I like your amplifier very much.
You have done most everything possible to improve JFET Stages.
Using cascodes.
Maybe you have mentioned what Supply voltage you use?
It is not in schematic
http://www.diyaudio.com/forums/attac...amp=1213720316

My guess is like +- 18-20 Volt, regulated.

Lumba Ogir 21st September 2008 01:44 PM

maxpou,
are you sure you need any voltage gain?


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